[INFO] fetching crate blynk_io 0.3.0...
[INFO] checking blynk_io-0.3.0 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate blynk_io 0.3.0 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate blynk_io 0.3.0 on toolchain 7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate blynk_io 0.3.0
[INFO] finished tweaking crates.io crate blynk_io 0.3.0
[INFO] tweaked toml for crates.io crate blynk_io 0.3.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate crates.io crate blynk_io 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aee1192cd9ba7be58ee4d8dae28b8aa087a0760498bceddd6831b3293a0c8c2d
[INFO] running `Command { std: "docker" "start" "-a" "aee1192cd9ba7be58ee4d8dae28b8aa087a0760498bceddd6831b3293a0c8c2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aee1192cd9ba7be58ee4d8dae28b8aa087a0760498bceddd6831b3293a0c8c2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aee1192cd9ba7be58ee4d8dae28b8aa087a0760498bceddd6831b3293a0c8c2d", kill_on_drop: false }`
[INFO] [stdout] aee1192cd9ba7be58ee4d8dae28b8aa087a0760498bceddd6831b3293a0c8c2d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dtail_expr_drop_order" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] de7688854bc9c8858736e368290a2b42934fb82db0748cb027c8c24297c910bd
[INFO] running `Command { std: "docker" "start" "-a" "de7688854bc9c8858736e368290a2b42934fb82db0748cb027c8c24297c910bd", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]     Checking unicode-xid v0.2.2
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking pest v2.1.3
[INFO] [stderr]     Checking quote v1.0.15
[INFO] [stderr]    Compiling pest_meta v2.1.3
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling restruct v0.1.2
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling proc-macro-crate v1.1.0
[INFO] [stderr]    Compiling restruct_derive v0.1.2
[INFO] [stderr]    Compiling num_enum_derive v0.5.6
[INFO] [stderr]     Checking num_enum v0.5.6
[INFO] [stderr]     Checking blynk_io v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `ClientError` is never constructed
[INFO] [stdout]   --> src/./client.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | struct ClientError;
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ClientError` is never constructed
[INFO] [stdout]   --> src/./client.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | struct ClientError;
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.18s
[INFO] running `Command { std: "docker" "inspect" "de7688854bc9c8858736e368290a2b42934fb82db0748cb027c8c24297c910bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de7688854bc9c8858736e368290a2b42934fb82db0748cb027c8c24297c910bd", kill_on_drop: false }`
[INFO] [stdout] de7688854bc9c8858736e368290a2b42934fb82db0748cb027c8c24297c910bd